A.N.U. Share definition Flag stands for All Niggered Upusually refers to vehicles with 24+ inch rims, loud bumping stereo, etc. that 75 caddy was cool until it got A.N.U. A.N.U. by dboyfromdahood June 14, 2013 0 0 Get merch Get the A.N.U. mug. Buy Now — $32.95 See more merch